package day02;

public class DoubleDemo {
    public static void main(String[] args) {
        //double:双精度浮点数，8个字节
        double a = 3.14;
        float b = 3.14f;

        double c=6.0,d=4.9;
        System.out.println(c-d);//有可能发生舍入误差

    }
}
